tion:The economy of Japan is a highly developed free-market economy.[23] It is the third-largest in the world by nominal GDP and the fourth-largest by purchasing power parity (PPP).[24][25] and is the world's second largest developed economy.[26] Japan is a member of the G7 and G20. According to the International Monetary Fund, the country's per capita GDP (PPP) was at $38,937 (2016).[27] Due to a volatile currency exchange rate, Japan's GDP as measured in dollars fluctuates sharply. Accounting for these fluctuations through the USE of the ATLAS method, Japan is estimated to have a GDP per capita of around $38,490. The Japanese economy is forecast by the Quarterly Tankan SURVEY of business sentiment conducted by the Bank of Japan.[28] The Nikkei 225 presents the monthly report of top blue chip equities on Japan Exchange Group, which is the world's third-largest stock exchange by market capitalisation.[29][30] In 2018, Japan was the world's fourth-largest importer and the fourth-largest exporter.[31] It has the world's second-largest foreign-exchange reserves worth $1.3 trillion.[22] It ranks 29th on Ease of doing business INDEX and 5th on Global Competitiveness Report.[32] It ranks first in the world in the Economic Complexity Index.[33] Japan is also the world's third-largest consumer market.[34]